heavy 90gr

  1. DH302

    90gr 223 /2000mr

    Ok I need some help guys, new to heavy 223. 26 in 1-7 twist heavy varmint profile, .090 freebore. Question is I want to try 2000 mr , seating depth 2.540 .010 off lands, what charge do I start at? Forgot fully prepped LC 12 brass alliant says 23.8 at 2.550 coal , is this start or max